Now, to the amazing scene on the subway tracks in boston. A woman falling off the platform. Bystanders leaping into action. And the whole thing caught on tape. Check it out. Look at this new surveillance video. A woman falling on to the tracks at a subway station in boston. Check it out again. A woman walking along the platform. One misstep and over the edge. Bystanders quickly come to her rescue. This man in maroon goes over to investigate, while this woman in black calls for help. They bend down and reach over. But they can't lift her out. As they struggle, two other bystanders rush over, as a larger crowd now starts to form. And in just under a minute, the woman is pulled up to safety, standing, seemingly, unharmed. That's why they call it boston strong. Yeah. What a lucky woman. Absolutely. Good thing that everybody leapt into action there. And coming up on "gma," a

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